In Flutter, you can pass data between screens using Navigator and the MaterialPageRoute class. The Navigator widget is used to manage the navigation stack, while the MaterialPageRoute class defines the transition between two pages (screens).
Here’s an example of how to pass data from one screen to another in Flutter:
import 'package:flutter/material.dart';
void main() => runApp(MyApp());
class MyApp extends StatelessWidget {
@override
Widget build(BuildContext context) {
return MaterialApp(
home: FirstScreen(),
);
}
}
class FirstScreen extends StatelessWidget {
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text('First Screen'),
),
body: Center(
child: RaisedButton(
child: Text('Go to Second Screen'),
onPressed: () {
Navigator.push(
context,
MaterialPageRoute(
builder: (context) => SecondScreen(data: 'Hello World'),
),
);
},
),
),
);
}
}
class SecondScreen extends StatelessWidget {
final String data;
SecondScreen({Key key, @required this.data}) : super(key: key);
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text('Second Screen'),
),
body: Center(
child: Text(data),
),
);
}
}
In this example, the FirstScreen has a RaisedButton that, when pressed, uses the Navigator to navigate to the SecondScreen. The data property is passed as an argument to the SecondScreen constructor when it is created. The SecondScreen then displays the data using a Text widget.
Note that this is just one way to pass data between screens in Flutter, and there are other ways to do this, such as using a StatefulWidget or Bloc pattern. The method you choose will depend on your specific use case and requirements.
